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P1221 Tac motor feedback is the description of the code,TPS,TAC AND pedal postion sensor replaced, but p1221 still comes up on scan tool,what should i do?

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No reason to replace any of those 3 parts,
until you not only use the scan tool to look at data,
but back probe & test them
Did even one fail a test or were they even tested?
What vehicle & motor?
You need factory trouble charts, to provide some info,
& help there -- on any vehicle or any issue

Posted on Jul 22, 2013

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Posted on Jan 02, 2017

chiquititas
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SOURCE: 2003 2500 HD code P1518a

Try to charge the battery.

Posted on Jun 25, 2008

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SOURCE: when i turn on my car i hear a tac tac tac from

one of your actuators(electric)in climate control system is skipping a tooth, to isolate which one you can get a helper to turn the key on and listen under dash to check which one is causing noise.the actuator will need to replaced.

Posted on Sep 04, 2009

Testimonial: "Thanks Alot, i really appreciate your help. Ill get to taking apart the dash as soon as i can. Again Thanks alot."

  • 613 Answers

SOURCE: what does failed tac module.

throttle actuator signal sounds like it is stuck closed or the wire to your throttle body is disconnected loose dirty

Posted on Sep 14, 2010

tburtk
  • 158 Answers

SOURCE: the vehicle constantly goes to the reduced power

There is a yellow wire from the Throtlebody connector that comonly breaks, pull a little on that wire about 5 to 8 inches away from connector and feel if it is spongy or brakes, if so replace wire. Also check that the ground on the back of the passenger side head is tight. There is also an update for this but it will require you to go to your local dealer to have your PCM reflashed.

Posted on Feb 11, 2011

skychief2001
  • 21873 Answers

SOURCE: NEED HELP WITH P1125 CODE

You didn't say what kind of vehicle or the model year, if you have replaced the TPS and the harness, it could be a problem in the computer.

Posted on Aug 29, 2012

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2005 ford five hundred replaced battery went into engine failsafe mode n will only idle no throttle response I replaced throttle body assembly just sits and idles


try using the scan tool to reset the ECM program
code p 2104 refers to throttle actuator control(TAC) system---forced idle mode ===causes ---wiring--TAC motor ---APP ensor--ECM
code p 2112 refers to throttle control actuatorTAC system---actuator stuck closed ===causes ---throttle body, throttle valve tight/ sticking
or TAC system--circuit malfunction===causes wiring short to positive ---short to ground ---throttle position sensor--- ECM

Feb 21, 2016 | Ford Cars & Trucks

Tip

Throttle Actuator Control - drive by wire


1.5) TAC - Throttle Actuator Control
What is it? Some vehicles have indirect throttle control "drive by wire". Instead of the accelerator pedal position being conveyed directly to the throttle plate by cable linkage, it is detected by an electrical sensor and this is fed to the ECU. The ECU in turn sets the position of the throttle plate appropriate to the sensed position using an electric motor. The throttle plate position is, in turn, checked by the throttle position sensor and this signal is sent to the ECU to confirm that the requested throttle plate setting and its recorded position are in agreement.

Where is it located? The first part of the TAC is located on the inner wing/fender and consists of rotary device to which the accelerator cable is attached; the degree of rotation (pedal depression) is detected electrically and this is signalled to the ECU. The second part of the TAC is located on the throttle body and acts on the throttle plate shaft.

Symptoms of a faulty TAC
Associated OBD2 error codes DTCs: P0120, P0124, P1516; P2102, P2103;P2111 - P2118

  • Sudden power loss/limp home: If the ECU detects any fault with the throttle actuator control directly or with the position feedback via the TPS it engages an immediate engine shut-down to either idle speed or limp-home speed.

How to fix? The TAC is part of complex systemand the failure of the TPS has to be eliminated first as a possible source of error. A simple electrical connection failure can also give rise to the shutdown so all associated connections should be checked to ensure that they are clean and bright to allow electrical continuity.


NEXT 1.6) EGR Exhaust Gas Recirculation valve

on Jul 15, 2011 | Mercedes-Benz E-Class Cars & Trucks

1 Answer

Have an 03 suberban z71 today wife was driving and lost power to the pettle and overheating transmission light came on how can i fix this


Check engine light come on ? Any messages on DIC - driver information center , reduced power ,if the vehicle has it . Any other lights lite , yellow wrench symbol . Do you own a scan tool ? a professional grade scan tool , not a code reader . Do you know how to do electrical trouble shooting ? Suggest you go on you tube an check out videos on electronic throttle control .
Throttle Actuator Control (TAC) System Description
The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for mechanical cable. The TAC system performs the following functions:
• Accelerator pedal position sensing
• Throttle positioning to meet driver and engine demands
• Throttle position sensing
• Internal diagnostics
• Cruise control functions
• Manage TAC electrical power consumption
The TAC system components include the following:
• The accelerator pedal position (APP) sensors
• The throttle body assembly
• The throttle actuator control module
• The powertrain control module (PCM) .I strongly suggest you take it to a ASE certified repair shop

Feb 15, 2016 | Cars & Trucks

1 Answer

05 mustang gt codes po 2104 and 2112 replace tcm and tps


P2104 - Throttle Actuator Control (TAC) System - Forced Idle Description: The TAC system is in the failure mode effects management (FMEM) mode of forced idle. Possible Causes:
  • Open or short in multiple accelerator pedal position (APP) sensor circuits.
  • Damaged APP sensor.
  • Damaged powertrain control module (PCM).
Diagnostic Aids: This DTC is an informational DTC and can be set in combination with a number of other DTCs which are causing the FMEM. Diagnose other DTCs first. Application Key On Engine Off Key On Engine Running Continuous Memory All

P2112 - Throttle Actuator Control (TAC) System - Stuck Closed. Description: This powertrain control module (PCM) fault status indicates the throttle plate is at a lower angle than commanded. Possible Causes:
  • Binding throttle body, stuck closed.
  • Damaged PCM.
Diagnostic Aids: Application Key On Engine Off Key On Engine Running Continuous Memory All GO to DV1 Are you familiar with electronic throttle control ? You have a dc electric motor on the throttle body an at the gas pedal there are APP pedal position sensors that send voltage signals to the PCM which in turn controls the electric motor opening an closing the throttle ! By what this P02112 states the throttle plate is binding , which means it could be bad or just needs to be cleaned ! You will need to disconnect the electrical connector an see if it is binding by pushing it with finger or thumb . which is ever easiest !
GO to QE1

Apr 08, 2015 | 2005 Ford Mustang GT

1 Answer

Start and dies, codes p061f, p2106,p2104,p2111


code p2106 refers to throttle actuator control (TAC) system--limited power mode===causes ---wiring---TAC motor---APP sensor---ECM

code o2104 refers to TAQC systems ---forced idle mode===causes wiring---TAC motor--APP sensor--ECM

code p2111 refers to TAC system --actuator stuck open ==causes ---throttle body--throttle valve tight/ sticking

code p2111 also refers to TAC system --circuit malfunction==causes wiring---short to positive--short to ground---TP sensor---ECM

code p2111 also has a 3rd section---brake vacuum---implausible signal===causes---wiring---vacuum sensor--mechanical fault

Dec 21, 2013 | 2005 Ford Crown Victoria

1 Answer

I have codes 0122 0123 2104 2110 2111 2112 would it be the throttle body


Trouble Code: P0122

Throttle/Pedal Position Sensor A Circuit Low

Possible Causes:


Open ETC TP sensor harness.Short to ground in the ETC TP sensor harness.Damaged TP sensor.SIG RTN circuit open to the TP sensorPCM has failed


Trouble Code: P0123

Throttle/Pedal Position Sensor A Circuit High

Possible Causes:


TP sensor not seated correctly.TP sensor harness is short to voltage.TP sensor harness short to VREF.SIG RTN circuit open to the TP sensor.Damaged TP sensor.PCM has failed.Trouble Code: P2104

Throttle Actuator Control (TAC) System (Forced Idle)

Possible Causes:


Air cleaner and air inlet are not correctly seated.Check for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensor.Throttle Position (TP) sensor.Manifold Absolute Pressure (MAP) sensor.PCM has failed.

Mustang 2006-2008
4.0L V6 VIN N Auto 12

Print


Trouble Code: P2008

Intake Manifold Runner Control (IMRC) Circuit Open (Bank 1)

Possible Causes:


IMRC monitor circuit open


Trouble Code: P2014

Intake Manifold Runner Position Sensor/Switch Circuit (Bank 1)

Possible Causes:


IMRC monitor circuit openMechanical concern - bind, seize, damage or obstruction of IMRC hardware


Trouble Code: P2015

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)

Possible Causes:


Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware


Trouble Code: P2019

Intake Manifold Runner Position Sensor/Switch Circuit (Bank 2)

Possible Causes:


IMRC monitor circuit openMechanical concern - bind, seize, damage, or obstruction of IMRC hardware


Trouble Code: P2020

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 2)

Possible Causes:


Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware


Trouble Code: P2065

Fuel Level Sensor B Circuit

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2066

Fuel Level Sensor B Circuit Range/Performance

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2067

Fuel Level Sensor B Circuit Low

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2068

Fuel Level Sensor B Circuit High

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2070

Intake Manifold Tuning Valve (IMTV) Stuck Open (Bank 1)

Possible Causes:


IMTV signal circuit shorted to PWR GND or SIG RTNDamaged IMRC actuatorPCM has failed


Trouble Code: P2071

Intake Manifold Tuning Valve (IMTV) Stuck Closed Bank 1

Possible Causes:


IMTV signal circuit shorted to PWR GND or SIG RTNDamaged IMRC actuatorIMTV circuit openPCM has failed


Trouble Code: P2072

Throttle Actuator Control (TAC) System (Ice Breakage)

Possible Causes:


Ice or oil in the intake air system could be the result of a Positive Crankcase Ventilation (PCV) system concern


Trouble Code: P2096

Post Catalyst Fuel Trim System Too Lean (Bank 1)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2097

Post Catalyst Fuel Trim System Too Rich (Bank 1)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2098

Post Catalyst Fuel Trim System Too Lean (Bank 2)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2099

Post Catalyst Fuel Trim System Too Rich (Bank 2)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2100

Throttle Actuator Control (TAC) Motor Circuit/Open

Possible Causes:


TAC motor has an open windingTAC motor is damagedTAC motor harness is openTAC motor harness is short to PWRTAC motor harness circuits are short togetherTAC motor harness connector is unplugged


Trouble Code: P2101

Throttle Actuator Control (TAC) Motor Range/Performance

Possible Causes:


TAC motor circuits are cross-wired


Trouble Code: P2104

Throttle Actuator Control (TAC) System (Forced Idle)

Possible Causes:


Air cleaner and air inlet are not correctly seatedCheck for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensorThrottle Position (TP) sensorManifold Absolute Pressure (MAP) sensorPCM has failed


Trouble Code: P2105

Throttle Actuator Control (TAC) System (Forced Engine Shutdown)

Possible Causes:


Air cleaner and air inlet are not correctly seated.Check for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensor.Throttle Position (TP) sensor.Manifold Absolute Pressure (MAP) sensor.PCM has failed.


Trouble Code: P2107

Throttle Actuator Control (TAC) Module Processor

Possible Causes:


TAC motor harness circuit short to ground.TAC motor harness circuit short to voltage.Damaged Electronic Throttle Body (ETB).PCM has failed.


Trouble Code: P2110

Throttle Actuator Control (TAC) System (Forced Limited RPM)

Possible Causes:


Air cleaner and air inlet are not correctly seated.Check for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensor.Throttle Position (TP) sensor.Manifold Absolute Pressure (MAP) sensor.PCM has failed.


Trouble Code: P2111

Throttle Actuator Control (TAC) System (Stuck Open)

Possible Causes:


Binding throttle body, stuck open.TAC motor circuit open.TAC motor circuits are cross-wired.TAC motor harness circuits are shorted together.PCM has failed.


Trouble Code: P2112

Throttle Actuator Control (TAC) System - Stuck Closed

Possible Causes:


Binding throttle body, stuck open.TAC motor circuit open.TAC motor circuits are cross-wired.TAC motor harness circuits are shorted together.PCM has failed.

Oct 26, 2012 | 2006 Ford Mustang

1 Answer

I have a 2003 Cadillac Escalade, and I recently had a print out done on my vehicle. I'm not understanding these codes: aa1 poor connection at the TAC module, aa2 failed TAC module, aa3 check TPP or TP


I always ask---If you went to the trouble to have
it scanned & get a nice print out & I would assume
asked all these questions at the shop,then why
did you not leave it,to be further component tested
& issue resolved?

TAC -throttle actuator control

The drive by wire motor that opens the throttle
body plate

TPS Sensor--throttle position sensor on the same

Try spraying some CRC Throttle Body Cleaner in
there around the throttle plate

After that you need to have to tps sensor tested
I wouldn't be in a hurry to change a throttle body,
they cost hundreds & the codes don't tell you it's bad

The only time you replace a throttle body is if you can not
get the motor by it's self

Oct 02, 2012 | Cars & Trucks

1 Answer

2006 suzuki forenza


P02135 TPS sensor 1 and 2 corelation, You need a scan tool to observe the corelation of 1 and 2,You will have to access the throttle motor and open it by hand.Disconnect the TAC do you have the 5volt reference and make sure you terminal connection are making good contacts

Mar 13, 2012 | Cars & Trucks

2 Answers

Chevy Cobalt '06 The vehichle TPS is reading at 36% when the car is off Scan tool commits that the percentage should be at 0% -I have replaced the TPS at gas pedal ..did not solve ..how do I recalibrate...


The TAC (throttle actuator control) is where both TPS sensors reside. On an older system this would be the throttle body. This system uses redundant TPS and APP (accelerator pedal position) sensors. If the problem were with the APP then you should have a code for a correlation problem between the TPS and APP or one APP sensor to the other. The most common issue by far that I have found is carbon build up in the throttle bore causing the plate to be stuck open. Remove the air intake tube from the TAC assembly and see if there is a ring of carbon around the area of the throttle plate. If so then using carb spray and an old toothbrush, clean the throttle body out. You can hold the plate open manually to do this but make certain the key is off or you will set several other codes and the throttle plate will fight against you. You can also remove the TAC assembly to clean if you like, though I do not recommend it. When you are done you will need to start the vehicle and run in drive for a minute or so, then to park or neutral. A couple of these cycles will usually relearn the position of the plate so that you can test drive. (Carb cleaner in the intake manifold will usually make the first start difficult.) Clear the codes, test drive the vehicle normally, but increase the take off and stop hard a few times after a few minutes of easy driving. Check and clear any codes that may have set on the test drive. You will want to drive again normally and check for codes again. If you do not have carbon the most likely culprit will be the TAC itself. The TPS sensors are intergral so you usually need to replace the whole TAC. Though I have seen only a handful of them that actually need replacement.
Good luck

Sep 20, 2009 | 2006 Chevrolet Cobalt

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